PT-2017-9049 · Matrixssl · Matrixssl

Hanno Böck · Published 2017-01-13 · Updated 2017-01-19 · CVE-2016-6887

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions MatrixSSL versions 3.8.6 and earlier

Description The issue concerns the pstm exptmod function, which does not properly perform modular exponentiation. This could allow remote attackers to predict the secret key via a CRT attack.

Recommendations For MatrixSSL versions 3.8.6 and earlier, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2016-6887

Affected Products

Matrixssl

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2016-6887 · Security Note
• https://osv.dev/vulnerability/CVE-2016-6887 · Vendor Advisory
• http://matrixssl.org/blog/releases/matrixssl_3_8_4 · Vendor Advisory
• https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html · Note